Struct TextureWidget 

pub struct TextureWidget { /* private fields */ }

A leaf drawing an externally rendered scene texture — a video frame, a camera preview, a 3D view — by the id its producer registered it under (for a frame source, texture::TextureRegistration::scene_texture_id). texture_view places it with a TextureFit (given the texture’s own extent, .source_size(..)), clips it to .corner_radius(..), and takes an accessible .label(..). A texture view inside a retained subtree keeps that subtree from being replayed from cache — see the widget’s own docs. The retained widget for a TextureView.

Implementations

impl TextureWidget

pub fn scene_texture_id(&self) -> u64

The scene texture id this widget draws.

Trait Implementations

impl Widget for TextureWidget

fn layout(&mut self, _ctx: &mut LayoutCtx<'_>, bc: &BoxConstraints) -> Size

Choose a size within bc and return it. The chosen size must satisfy bc (callers may additionally clamp via BoxConstraints::constrain).

fn paint(&mut self, ctx: &mut PaintCtx<'_>, scene: &mut dyn PaintScene)

Emit draw commands for this widget into scene.

fn semantics(&self, ctx: &mut SemanticsCtx)

Contribute this widget’s accessibility node(s) into ctx.

fn event(&mut self, _ctx: &mut EventCtx<'_>, _event: &InputEvent) -> EventResult

Handle an input event, optionally mutating application state through ctx and reporting whether it was consumed.

fn type_name(&self) -> &'static str

This widget’s concrete type name, for read-only tooling.

fn visit_children(&self, _visitor: &mut dyn FnMut(&ChildPod))

Visit this widget’s owned ChildPods, in declaration (paint) order — the read-only seam that makes the retained hierarchy enumerable.

fn as_sliver(&mut self) -> Option<&mut (dyn SliverWidget + 'static)>

This widget as a sliver, if it speaks the sliver protocol — the opt-in seam a scrolling viewport lays its children out through (see crate::sliver and ChildPod::layout_sliver_child).